热轧转鼓式飞剪改进

Improved Drum Type Flying Shear for Hot Strip Mills

飞剪是热轧生产线中不可缺少的设备,它在提高轧机咬入效率,减少轧辊受到的冲击,防止轧制过程中的废钢事故,方便带钢卷取打包中都起到决定性作用,直接影响产品质量和成材率。为此,针对承钢1780mm热连轧生产线上的转鼓式飞剪转鼓轴承密封间隔环处发生漏油,剪刃锁紧缸频繁漏油,剪刃更换时间过长,以及由于带钢尾部剪切形状不合格影响精轧质量等问题,分析问题的原因,提出改进措施。

Flying shear is an indispensable equipment in a hot strip mill and plays a decisive role in increasing roll biting efficiency,reducing the impact of strips on rolls,preventing rolling accidents and facilitating the banding of coils.It is a key for strip quality and yield.The paper analyzes the reason why oil leaks from the space ring on the drum bearings of the flying shear in1780mm hot strip mill at Chengde Steel,why the knife locking cylinder leaks oil frequently,it takes too much time to change the knife and why the unacceptable cut shape of strip head and tail ends can lead to bad finish rolling result,and then puts foreword the improvement solution.